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The CDL general knowledge test is required to be taken by all CDL applicants. The New Hampshire CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the New Hampshire CDL Manual. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual NH general knowledge test! To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1. The amount of liquid to load into a tank depends on:
the amount the liquid will expand in transit.
legal weight limits.
the weight of the liquid.
All of the above.
2. When driving, you should:
avoid checking your mirros often.
avoid using your mirrors to spot overtaking vehicles.
check your mirrors regularly.
use your mirrors only when changing lanes.
3. When you park your vehicle and turn off the engine:
apply the parking brake.
activate your right turn signal.
move the gear shift to first gear, if possible.
keep the vehicle in the lane.
4. As part of your pre-trip inspection, make sure:
your cargo does not obscure your view.
the cargo is balanced properly.
the vehicle is not overloaded.
All of the above.
5. Which of the following statements about driving in slippery conditions is NOT true?
As the temperature rises to the point where ice begins to melt, the road becomes less slippery.
Wet ice is more slippery than ice that is not wet.
When the temperature drops, bridges will freeze before the road will.
The roads are most slippery in the first half hour after it starts to rain.
6. If driving a heavy vehicle, you should:
stay in the right lane.
try to pass other vehicles going uphill.
stay in the left lane.
avoid braking.
7. On a level surface:
wheel chocks make it easier for the vehicle to roll.
you should use wheel chocks to hold the vehicle.
should never be used if the brakes are very wet.
wheel chocks should not be used when the brakes are very hot.
8. The parking brake:
should be used when driving in bad weather.
should be used when you need to apply the brakes firmly.
should be used whenever you park.
All of the above.
9. If your vehicle begins to hydroplane, you should:
brake gently to slow down.
accelerate slightly.
immediately pull off the road.
release the accelerator and push in the clutch.
10. Backing is dangerous because:
cargo may fall out.
you have to turn the steering wheel toward the direction you want to go.
you need to back toward the passenger driver side so you can see.
you cannot see everything behind your vehicle.
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NH CDL Knowledge Test

Number of questions: 50
Correct answers to pass:40
Passing score:80%
Number of questions: 50
Correct answers to pass:40
Passing score:80%
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